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1F1

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ID = 17910
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: National Union Radio Corp.; Orange (NJ) 
Tube type:  Ballast Tube (neither FeH or Urdox)   Power-supply 
Identical to 1F1
First Source (s)
09.Jul.1935 : Electron Tube Registration List

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=B)
Was used by Radio/TV-reception etc.
Filament
Description

Current regulator for 2 V battery operated tubes. 2.2 to 3.2 V input at 0.720 amps.

 
Tube prices 2 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   

577_5.png 1F1: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
Usage in Models 2= 1935 ; 2= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4
 
20200713_220929.jpg

1F1
 

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